Essential oils are obtained from the flowers, leaves, roots, bark, fruits, seeds and resins of herbs by distillation and pressing. Aromatic essential oils have strong volatility, small molecular weight, and are easily absorbed by the human body. They can quickly penetrate into human organs and excrete excess components from the body. The whole process only takes a few minutes.The fragrance of the plant itself also directly stimulates the human pituitary gland to secrete hormones, thereby balancing the functions of the body and playing a role in beauty and skin care. It is conceivable that the effects of essential oils on the human body are extremely extensive. Essential oils are highly concentrated extracts of aromatic plants.